#!/usr/sbin/dtrace -Zs /* * j_thread.d - snoop Java thread execution using DTrace. Written for the Java hotspot DTrace provider. * * $Id: j_thread.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ * * This traces activity from all Java processes on the system with hotspot * provider support (1.6.0). * * USAGE: j_thread.d # hit Ctrl-C to end * * FIELDS: * TIME Time string * PID Process ID * TID Thread ID * THREAD Thread name * * LEGEND: * => thread start * <= thread end * * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. * * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at Docs/cddl1.txt * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * CDDL HEADER END * * 09-Sep-2007 Brendan Gregg Created this. */ #pragma D option quiet #pragma D option switchrate=10 dtrace:::BEGIN { printf("%-20s %6s/%-5s -- %s\n", "TIME", "PID", "TID", "THREAD"); } hotspot*:::thread-start { this->thread = (char *)copyin(arg0, arg1 + 1); this->thread[arg1] = '\0'; printf("%-20Y %6d/%-5d => %s\n", walltimestamp, pid, tid, stringof(this->thread)); } hotspot*:::thread-stop { this->thread = (char *)copyin(arg0, arg1 + 1); this->thread[arg1] = '\0'; printf("%-20Y %6d/%-5d <= %s\n", walltimestamp, pid, tid, stringof(this->thread)); }